排瑶同胞无论男女，头上都有两支雪白的“鸡翎筋”，姑娘婚后不插，以作标识。
参考答案：对
______________ about wild plants that they decided to make a trip to Madagascar for further research.
A．So curious the couple were
B．So curious were the couple
C．How curious the couple were
D．The couple were such curious
劳动力人口是指年龄在18岁以上具有劳动能力的人的全体。( )
